Crash View

A21 southbound lane 2 closure (31/2 to MP 34/9)

Active

A21 southbound lane 2 closure (31/2 to MP 34/9)

Start time
Mon, Aug 17, 2026 7:42 PM
Expected end
Tue, Aug 18, 2026 5:00 AM
Duration
9 hours 18 minutes
Road
A21 – A21 Southbound Between A25 And A225
Category
Road Maintenance
Direction
Southbound
Carriageway
Dual Carriageway
Lanes affected
Lane 2 closed
Reason
Maintenance Work
Live incident
Active roadworks
Planned
Cleared
Hover or tap markers for full details

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First published
Mon, Aug 17, 2026 7:42 PM
Last updated
Mon, Aug 17, 2026 10:12 PM
Cleared
Tue, Aug 18, 2026 5:00 AM
  • Latest update: A21 southbound lane 2 closure (31/2 to MP 34/9)
Coordinates
51.244328, 0.195841
Latitude span
51.235403 – 51.254003
Longitude span
0.174842 – 0.213101
Bounding box centre
51.244703, 0.193972
Location descriptions
  • A21 southbound between A25 and A225
  • A21 southbound within the A225 junction
  • A21 southbound between A225 and A26 near Tonbridge (west)
Feed validity status
Active
Overall feed start
Mon, Aug 17, 2026 7:42 PM
Overall feed end
Tue, Aug 18, 2026 5:00 AM
Feed window length
9 hours 18 minutes
Probability code (raw)
certain
Compliance option (raw)
mandatory
Source identification (raw)
roadworks
Management type value
other
Contra-flow flag (raw)
false
Width restriction flag (raw)
false
Height restriction flag (raw)
false
Weight restriction flag (raw)
false

Segment 1

21 coordinate pairs
Description
A21 southbound between A25 and A225
Carriageway
Dual Carriageway
Lane Usage
Cl2
Lane Number
2
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
0 lanes restricted
Operational Lanes
2 operational lanes
Direction On Section
South Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A21
Linear Element Model
The Network Model
Linear Element Id
{273BDD6D-EA5C-406A-AB7F-26A8E4752C56}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
970 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.251282 0.177031
51.251017 0.177248
51.250634 0.177545
51.250433 0.177708
51.250223 0.177884
51.249848 0.178224
51.249536 0.178539
51.249215 0.178882
51.248957 0.179228
51.248726 0.179576
51.248484 0.17998
51.248428 0.180092
51.248307 0.180315
51.247933 0.181114
51.247546 0.182056
51.24743 0.182352
51.247121 0.183139
51.246933 0.183618
51.246781 0.184055
51.245874 0.186376
51.245599 0.187137

Segment 2

13 coordinate pairs
Description
A21 southbound within the A225 junction
Carriageway
Dual Carriageway
Lane Usage
Cl2
Lane Number
2
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
0 lanes restricted
Operational Lanes
2 operational lanes
Direction On Section
South Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A21
Linear Element Model
The Network Model
Linear Element Id
{94EAE9C2-6E54-4372-B870-D20A69C2CE8C}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
305 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.242907 0.205506
51.242777 0.205701
51.242537 0.206062
51.242362 0.206283
51.242187 0.206489
51.241938 0.206778
51.241755 0.206984
51.241498 0.20723
51.241306 0.207407
51.241205 0.207503
51.24105 0.20761
51.240704 0.207865
51.24064 0.20792

Segment 3

6 coordinate pairs
Description
A21 southbound between A25 and A225
Carriageway
Dual Carriageway
Lane Usage
Cl2
Lane Number
2
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
0 lanes restricted
Operational Lanes
2 operational lanes
Direction On Section
South Bound
Direction Relative
Aligned
Height Grade
Start2 End1
Linear Element Road
A21
Linear Element Model
The Network Model
Linear Element Id
{6A06C238-1D06-4AD1-82C2-1F3F7FA6FDFB}
Linear Element Type
A Carriageway
From Distance
1,015 m
To Distance
1,354 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.254003 0.174842
51.253903 0.174919
51.252895 0.175732
51.25172 0.176679
51.25141 0.176923
51.251282 0.177031

Segment 4

4 coordinate pairs
Description
A21 southbound within the A225 junction
Carriageway
Dual Carriageway
Lane Usage
Cl2
Lane Number
2
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
0 lanes restricted
Operational Lanes
2 operational lanes
Direction On Section
South Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A21
Linear Element Model
The Network Model
Linear Element Id
{A3D3123F-1CF3-4812-891F-7F4117548754}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
124 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.24064 0.20792
51.240485 0.208043
51.239654 0.208703
51.239636 0.208703

Segment 5

22 coordinate pairs
Description
A21 southbound between A25 and A225
Carriageway
Dual Carriageway
Lane Usage
Cl2
Lane Number
2
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
0 lanes restricted
Operational Lanes
2 operational lanes
Direction On Section
South Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A21
Linear Element Model
The Network Model
Linear Element Id
{2212B714-ED5D-4B2B-932C-B51456BA1F10}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
849 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.245599 0.187137
51.245551 0.187278
51.245332 0.187955
51.245235 0.188294
51.245062 0.188917
51.244855 0.189867
51.244775 0.190293
51.244714 0.190677
51.244611 0.191388
51.244523 0.192258
51.24447 0.192671
51.244468 0.192771
51.244456 0.192914
51.244441 0.193272
51.244416 0.194102
51.244416 0.194245
51.244414 0.194718
51.244451 0.196081
51.244461 0.196525
51.244484 0.1972
51.244503 0.198576
51.244496 0.198972

Segment 6

3 coordinate pairs
Description
A21 southbound between A225 and A26 near Tonbridge (west)
Carriageway
Dual Carriageway
Lane Usage
Cl2
Lane Number
2
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
0 lanes restricted
Operational Lanes
2 operational lanes
Direction On Section
South Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A21
Linear Element Model
The Network Model
Linear Element Id
{86D02D62-840A-4C55-BDF5-A047D82E5EF8}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
51 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.235784 0.212673
51.23559 0.212907
51.235403 0.213101

Segment 7

10 coordinate pairs
Description
A21 southbound within the A225 junction
Carriageway
Dual Carriageway
Lane Usage
Cl2
Lane Number
2
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
0 lanes restricted
Operational Lanes
2 operational lanes
Direction On Section
South Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A21
Linear Element Model
The Network Model
Linear Element Id
{CD235FE9-1B89-4221-9F73-77CDE500C386}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
511 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.239636 0.208703
51.239389 0.208898
51.239243 0.209013
51.238741 0.209433
51.238283 0.20987
51.237907 0.210239
51.237283 0.210896
51.236676 0.211598
51.235857 0.212576
51.235784 0.212673

Segment 8

10 coordinate pairs
Description
A21 southbound between A25 and A225
Carriageway
Dual Carriageway
Lane Usage
Cl2
Lane Number
2
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
0 lanes restricted
Operational Lanes
2 operational lanes
Direction On Section
South Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A21
Linear Element Model
The Network Model
Linear Element Id
{B42E6A5C-E2F2-4D9F-809E-C5E8AE625855}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
295 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.244235 0.20188
51.244194 0.202076
51.244096 0.202554
51.24395 0.203106
51.243789 0.203571
51.243656 0.203923
51.243476 0.204387
51.243223 0.204934
51.243158 0.20506
51.242907 0.205506

Segment 9

9 coordinate pairs
Description
A21 southbound between A25 and A225
Carriageway
Dual Carriageway
Lane Usage
Cl2
Lane Number
2
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
0 lanes restricted
Operational Lanes
2 operational lanes
Direction On Section
South Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
A21
Linear Element Model
The Network Model
Linear Element Id
{ABF05885-2CE4-4245-BD2B-8C1F0365B0A9}
Linear Element Type
A Carriageway
From Distance
0 m
To Distance
205 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.244496 0.198972
51.244496 0.198977
51.24445 0.199978
51.244434 0.200335
51.244389 0.20082
51.244317 0.201318
51.244273 0.201717
51.244254 0.201788
51.244235 0.20188
Geometry type
MultiLineString
Geometry points
98
First coordinate pair
0.177031, 51.251282
Road section segments
1
Road section points
98
View geometry JSON 
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View road section coordinates 
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]
Cause type
Road Maintenance
Detailed cause
Maintenance Work
Compliance
Mandatory
Probability
Certain
Validity status
Active
Road management
Other
Feed region label
Tonbridge
Feed provider
National Highways
Data source
Roadworks
Feed version
1
Record created
Mon, Aug 17, 2026 7:42 PM
Record versioned
Mon, Aug 17, 2026 10:12 PM
Coordinate source
Geometry

Driving on the A21? See every live closure, roadwork and planned restriction on this road.

A21 live closures

Related incidents

M25 Clockwise Jct 2 to Jct 3 carriageway closure

Cleared Roadworks National Highways
Dunton Green M25 · M20 Eastbound Between J1 And J2

Cleared 1 hour 35 minutes ago

Started 17 Aug 2026, 21:00 Ended 17 Aug 2026, 21:00

M25 Clockwise Jct 2 to Jct 3 carriageway closure

Category: Road Maintenance
View update

A21 southbound lane 2 closure (31/2 to MP 34/9)

Cleared Roadworks National Highways
Dunton Green A21 · A21 Southbound Between A25 And A225

Cleared 2 hours 5 minutes ago

Started 17 Aug 2026, 19:00 Ended 17 Aug 2026, 20:30

A21 southbound lane 2 closure (31/2 to MP 34/9)

Category: Road Maintenance
View update

A21 southbound lane 1 closure (37/6A to 38/3A)

Cleared Roadworks National Highways
Maidstone West A21 · A21 Southbound Between A225 And A26 Near Tonbridge (West)

Cleared 3 hours 35 minutes ago

Started 17 Aug 2026, 19:00 Ended 17 Aug 2026, 19:00

A21 southbound lane 1 closure (37/6A to 38/3A)

Category: Road Maintenance
View update

A21 southbound lane 1 closure (37/6A to 38/3A)

Cleared Roadworks National Highways
Maidstone West A21 · A21 Southbound Between A225 And A26 Near Tonbridge (West)

Cleared 20 minutes 28 seconds ago

Started 17 Aug 2026, 18:46 Ended 17 Aug 2026, 22:15

A21 southbound lane 1 closure (37/6A to 38/3A)

Category: Road Maintenance
View update

A21 southbound Sevenoaks exit slip road closure

Cleared Roadworks National Highways
Dunton Green A21 · A21 Southbound Exit For A25 West

Cleared 17 hours 35 minutes ago

Started 14 Aug 2026, 19:00 Ended 17 Aug 2026, 05:00

A21 southbound Sevenoaks exit slip road closure

Category: Road Maintenance
View update

A21 southbound lane 2 closure (31/2a to 32/8a)

Cleared Roadworks National Highways
Dunton Green A21 · A21 Southbound Between A25 And A225

Cleared 4 days 3 hours ago

Started 13 Aug 2026, 19:00 Ended 13 Aug 2026, 19:35

A21 southbound lane 2 closure (31/2a to 32/8a)

Category: Road Maintenance
View update